draft of how local_config.coffee could work in the navigator

gistfile1.txt

citynavi.update_configs
    defaults:
        ...
    helsinki:
        ...
    overrides:
        ...

citynavi.set_config "helsinki"


citynavi.update_configs = (configs) ->
    for key, config in configs
        citynavi.configs[key] = _.extend (citynavi.configs[key] or {}), config

    # reload current config
    if citynavi.config.id
        citynavi.set_config(citynavi.config.id)

citynavi.set_config = (id) ->
    citynavi.config = _.extend {}, citynavi.configs.defaults, citynavi.configs[id], citynavi.configs.overrides
    citynavi.config.id = id